At the day of the Galaxy S4 event, LG officially announced its Smart Video feature for the Optimus G Pro, and later Samsung touted a similar Smart Pause feature for its flagship.
As a result, LG says Samsung violates its eye-tracking patent with Smart Pause. The patent in question is applied for in 2009, but LG suspects its domestic rival of violating more patents dating as far back as 2005.
LG will start investigating once the Samsung Galaxy S4 hits the market next month. Naturally, Samsung denied the accusations, stating that it uses different methodology to implement its Smart Pause feature.
We'll see if LG and Samsung go in court over the eye-tracking patent in a month when boththe Optimus G Pro and Galaxy S4 will go on sale.

http://m.gsmarena.com/lg_suspects_samsungs_galaxy_s4_violates_its_eyetracking_patent-news-5726.php

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